Agreed.

You have a typo in the example namely in the output of the last number:
ListFilterer.GetIntegersFromList(new List<object>(){1, 2, "a", "b", "aasf", "1", "123", 123}) => {1, 2, 231}

There should be:
ListFilterer.GetIntegersFromList(new List<object>(){1, 2, "a", "b", "aasf", "1", "123", 123}) => {1, 2, 123}

This kata is a subject to deduplication process here: https://github.com/codewars/content-issues/issues/227.
Please join the discussion to help us identify duplicate kata and retire them.

Posting a spoiler solution is not a kata issue, it's a user issue.

so easy, so fun!

Not a kata suggestion

More Optimal

the situation depends on the language. in C# and F# at least, the user's solution is required to return a list of int by the type signature, while e.g. Java returns a list of objects. there has likely been some translation drift over time, as this is a very old kata

Hi, I replied to your other comment. I see your logical point, though. Would you like to consider re-writing the description? You could leave that posted with a suggestion flag.

I thought that the Test examples asked to read the numbers from the string and remove repeated cases! I should pay more attention next time :/. But better examples with diferent numbers than the ones into the string would be awesome.

That was fun! I was also able to use foreach this time instead of plain old for loop, so happy to have this opportunity!